American, informal

an extremely unpleasant person, or someone who has given secret information about you to the police.

If I find the rat fink who informed on me, he won't live long enough to do it again.

• drill into
• drill into someone
• drill something into
• drill something into someone
• drink like a fish
• drink someone under the table
• drink to
• drink to someone
• drink under the table
• drive a coach and horses through
• drive a coach and horses through something
• drive a hard bargain
• drive a wedge between
• drive a wedge between someone
• drive a wedge between something
• drive crazy
• drive home
• drive into the ground
• drive over the edge
• drive round the bend
• drive round the twist
• drive someone over the edge
• drive someone round the bend
• drive someone round the twist
• drive someone to distraction